Gradle plugin for setting up Quantum Leap project.
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Quantum Leap Gradle Plugin

Gradle build plugin for the Quantum Leap project, so the project's build scripts can be smaller and cleaner. Probably its not useful for anything else except for Quantum Leap, but you can check it out and get some inspiration from it.

Quantum Leap is a project template for building Java multi-module web applications backed by Spring Boot, jOOQ, Thymeleaf and PostgreSQL. The plugin expects following project structure.

root project <-- Here's applied the plugin
+--- core module <-- Module that contains main class annotated by @SpringBootProject annotation. Name of the module has to be "core".
\--- some other modules


  • Applies Spring Boot Gradle plugin to a root project and fixes Spring Boot's MainClassConvention responsible for finding main class in the project.

  • New generateJooqDomainObjects task, generates jOOQ domain objects to src/generated/java directories.

    • Generator configuration is read from db/jooq-generator-configuration.xml file located in resources of any of modules.
    • Database configuration is read from config/ properties file, also located in resources. Following properties are recognized:
      • spring.datasource.url
      • spring.datasource.username
      • spring.datasource.password
  • New discoverProjectDependencies task. It discovers dependencies between project's modules and serializes this structure into projectDependencies.ser files and puts those into the resources directory of every module. Structure is used in Quantum Leap project to sort resources loaded from various modules, etc.

  • Upgrades Thymeleaf to version 3.x.

  • Adds Maven Central Repository and JitPack Repository to all projects in the multi-project build.

  • Configures new testFixtures source set for every module. The source set should be used for test classes between modules. This is inspired by testFixtures dependencies in Gradle project.

    To use sources from the textFixtures source set, use following configuration.

    dependencies {
        // Notice the name of configuration!
        testCompile(project(path = ":core-module", configuration = "testFixturesUsageCompile"))  
        // Or you can depend on runtime-only configuration.
        testRuntime(project(path = ":core-module", configuration = "testFixturesUsageRuntime"))  

    The testFixtures source set can depend on other projects by declaring testFixturesCompile or testFixturesRuntime dependencies.

    dependencies {

Getting Started


The plugin uses new Gradle plugins DSL to avoid some problems connected to a Kotlin build scripts and an old way of apply plugins.

  1. Add the plugin repository to your project's settings.gradle.kts file.

    pluginManagement {
        repositories {
            maven(url = "")
  2. Apply the plugin to your root project's build.gradle.kts.

    plugins {
        id("cz.quantumleap") version "2.1.2-0"
  3. Optionally specify locataion of a main class in a module that contains it.

    ext {
        // Parameter mainClassName allows you to set Spring Boot's main class
        // explicitly and to suppress findMainClass task.
        mainClassName = "your.class.Name"


  1. In the root project run the generateModuleDependencies to generate and store module dependencies to resources files.

    gradle generateModuleDependencies
  2. Run the generateJooqDomainObjects task to generate domain objects from the database schema. Generated classes will be stored in src/generated/java directory.

    gradle generateJooqDomainObjects
  3. Start the application.

    gradle bootRun

Library versions